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Measurement of Carbon Ion Photoabsorption Cross Sections Using Laser Plasmas

Published online by Cambridge University Press:  12 April 2016

B. Wargelin
Affiliation:
Department of Physics and Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
S.M. Kahn
Affiliation:
Department of Physics and Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
W. Craig
Affiliation:
Lawrence Livermore National Laboratory, PO Box 808, Livermore, CA 94550, USA
R. London
Affiliation:
Lawrence Livermore National Laboratory, PO Box 808, Livermore, CA 94550, USA

Abstract

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Laser plasmas are well-suited to studies of ionic photoabsorption because they can provide highly ionized, low temperature plasmas of high column density, as well as bright, compact continuum X-ray sources which can illuminate the plasma under study. In our experiment, continuum X-rays from a gold laser plasma are partially absorbed as they traverse a carbon plasma and are then dispersed by a grazing incidence reflection grating. An X-ray imaging camera records both the absorbed and unabsorbed spectra simultaneously for later computer analysis to determine the photoabsorption cross sections for each carbon ion species.

Type
1. X-rays from a Hot Plasma
Copyright
Copyright © Cambridge University Press 1990

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